USB hub



FIG. 1 is a top view of a USB hub, showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a top, rear, left side perspective view thereof; and,

FIG. 8 is a top, front, left side perspective view thereof.

CLAIM The ornamental design for a USB hub, as shown and described.